Electric hair curler



Aug. 17 1926.

J. H. CANNON ELGTRC HAIR CURLER Filed July v.,

EY, Z4

element may extend.

Patented Aug. 17, 1926.

lsaaisi y JAMEsH. CANNON, or' Los ANGELES, CALIFORNIA.

ELECTRIC i HAIR GUREER.

Application rfiled .Tuly 7,

My present invention is an electric hair curler especially designedforthe waving of hair andsuitable for the production of vthe so-calledmarcel, or other waves; and it is an espectial object of this inventionto provide an electrically heated hair curler of advantageous form witheffective and durable heating means. All parts of my hair curler arecapable of being manufacturedand -assemble-d at moderate cost, althoughnot easi ly liable to accidental breakage or derangenient.

My invention comprises an electrical heat-` t ing element of noveldesignadapted to be incorporated in what may be termed a harnnier or T type ofhair curler; andit comprises alsor an advantageous exterior orernclosing shell construction comprising asplit or two-part casing'held/together at two or more points by clips or ferrules, some of vwhich maybe in the form of caps, although one ofsaid clips orvferrulesmay be the.upper end of Yan insulating hollow handle through which the lead vwiresto said heatingk Other objects of my invention will appear f from thefollowing description of alternative emcodiments thereof, `taken inconnection with the appended claims andthe accompanying drawings, inwhich- I A Fig. 1 is an elevationalview of the head orcurler end of aheater of my improvedv design, with a strand of hair wound thereon.

Fig. 2 is a longitudinal section through aA heater of the same type. t

Fig. 3 is an additional longitudinal section, which may be regarded-astaken in the planev indicated by the line 3-3 of Fig. 2. w

Fig. 4 is a top plan view taken inthe direction indicated by the arrow 4of Fig. 3,` the parts being broken away. .t

Fig. 5 is a transverse sectional view taken as indicated by the line 5-5of Fig. 3.

Fig. 6 is a separate illustration of -an alternative type of heatingelement hereinafter referred to. Y

Referring to the details of that specific embodiment of my inventionillust-rated in Figs. 1 to 5 inclusive, the heating element 11 of myhair curler may be housed within a substantially T-shaped casing orshell, preferably formed in two sections 13 and 14, these sections beingshown as held together by clips or ferrules comprising caps 15, 15, andoptionally comprising also the 192i. seriai'No. 724,557.

upper end 16 of a handle 17, through which extend conductive wires 18,18', by which electricity may be supplied to the heating element 11.

The heating element 11 ymay be of'any usual .or preferred. design, but Iconsider it especially advantageous to forni the same by windingacomparatively line resistance wire, such asa nickel chromium wire 19,in suitable spaced grooves 20, such as spiral grooves, formedr in theexterior surface of an insulating body, the said insulating body beingshown as provided with shellsspacing projections inthe form ofterminalflanges 21, 21, shown as provided with notches 22, 2.2V throughwhich an Iend of the .resistance wire may be. returned by way of asubstantially Acentral longitudinal channel 23to 4which extends alateral opening 24 4to per-.

mit the connecting of the fre-e ends of the wire 194 with the mainconductors 18, 18.l

Any usual orppreferred connecting means maybe employed in securing theends ofthe resistance wire 19 to the main conductorsl18,

18'; `and my,preferredmeansdfor this purpose may comprise conductiveleads 25, 25, having flat ends deformed to providechannels 26, 26adapted to'be crimped about both the ends of the main conductors 18,18".` and the extreme ends of the resistance wire 19 wound looselypontheleads 25, Y25.

the mentioned spacing of the-heating element V11 from they surroundingshell by Although air-insulation,as provided by l,

means of the flanges 21, 21, may be relied upon effectively to insulatethe wire 19 from theV surrounding casing, l may` optionally employ inthe head of my electrical heater additional insulating orspacing meanssuch asmica plates 27, 28; and the insertion oft these may be especiallydesirable whenth'e insulating bodyv of myheating elementV isVsubstantially semi-circular` in cross sectional outline, as best shownin Figs. 3 and 4. The

insertion, of insulating materials in the' transverse bar of the 'shapedhead member may, however, be entirely dispensed with, by, for example,the employment of an insulating spool of the character best shown in4ig. 6, this spool being substantially circular in cross sectionaloutline, although provided with a longitudinal channel 27 extending tothe slots 22"', 22a in the flanges 21g, 21a by which air-spacing iseffected, the ends of the insulating wire 19a being carried out througha lateral opening 24a and optionally connect-ed substantially in themanner already described.

Insulating cores 29 or 29a of the characters disclosed in Figs. 2, 3, 1and 6 mayadvantageously be cut from a material such as lava; and thissaine material may advantageously be employed inthe stem 30 of aT-shaped head of the character described, separate longitudinal channels31, 31 being shown as provided for the respective conductive leads 25,25', and any desired means such as a screw or screws 32, 32, beingemployed to connect said stein with the upper end 16 of the handle 17,or its equivalent. rThe main conductive wires18, 18 may advantageouslybe carried through the handle 17 in separate insulating tubes-33, 33;and a connecting plug 3-1, provided with conductive pins 35, 35connected with the main conductors 18, 13, may be spaced from andsecured to the stein 30, or its equivalent, by means suoli as anassembly plate 3G, shown as secured to'the insulating plug 34E by meansof a band 37, the mentioned screws 32, 32 being preferably carried notonly through the respective sections 13, 14 of the shell compris-ing thestem 30, but also through the upper end of said assembly plate.

Although, I have herein ldescribed all structural details of a completehair curler device, it should be understood that I attach especialimportance to the described construction of the heating element 11,including the alternative forni 11CL thereof shown in F ig. 6, and tothe three-point clip construction by which I may hold an outer casing ininsulated relationship thereon. To prevent accidental or unauthorizedremoval of the caps 15, 15', or their equivalent, they mayadvantageously be crimped or otherwise deformed in place, substantiallyas indicated at 38, 33v in Fig. 1.

Although I have herein described one complete embodiment of Vmyinvention and an advantageous alternative construction of a heatingelement suitable for use therein, it should be understood that variousfeatures described might be independently employed, and also thatvarious modifications might be made, by those skilled in the art,without the slightest departure from the spirit and scope of myinvention, as the same is indicated above and in the following claims.

' within said casino" I claim as my invention:

1. An. electric hair curler comprising; a T-shaped head consisting of aclosed hollow shell having a stem; an insulator entirely enclosed withinsaid shell; an electric heating element wound on said insulator; ahollow handle associated with said stem of the head and communicatingtherewith; and connecting means for said heating element comprisingcircuit conductors connected to said element and extending from saidshell directly into the hollow stem and handle.

2. A heater as described in claim 1 in which said shell is split in aplane extending through the bar of said head.

3. A heater as described in claim 1 in which said shell is split in aplane extending through the bar of Vsaid head and in which the sectionsof said shell are held together by neans engaging the ends of therespective sections.

.11. A heater as described in claim 1 in whichsaid T-shapcd head is heldtogether by means comprising caps at the ends of the bar thereof.

5. A heater as described in claim 1 in which said `l'-shaped head isheld together by means comprising caps at the ends of the bar thereofand comprising also an endV of the insulating handle through whichconductive leads extend.

G. In a haircurler: aic'asing; an insulator b 7 ment wound on saidinsulator; connecting means for said heating element comprising leadsof'conductive material channeled at one end for crimping, the ends ofsaid heating element being wound about said leads and held in conductiveContact with said leads by the crimping of said channeled ends; alongitudinally grooved insulating element within which said leads arespaced apart; a handle through which said lead conductors extend; aconnecting plug near one end of said handle; and an assembly plateprovided with means for securing the same within said handle.

7. In an organization as described in claim 6, a two-part T-shaped shellsurrounding said heating'elementand held in assembled relationshippartly by insertion in said handle.

In testimony whereof, I have hereunto set my hand at Los Angeles,California, this 28 day of J une, 1924. l

JAMES I-I. @ANN ON.

an electrical heating ele-

